1. For our English homework we have to write a paper. A three-thousand-word B. three-thousands-word C. three-thousand-words d. three -thousands-word 2. Jack English in the university for 30 years by the end of next mon A. will teach B. had taught C will have taught D. has taught

中国科学院 一九九六年攻读硕士学位研究生入学试题 生物化学〉(B卷) 一、是非题:10题,共10分。每题答对得一分,答错一题倒扣半分,不答 者不倒扣。答“是”写“+”,答“非”写“-”,写在题后的()中。 1.米氏常数(K)是与反应系统的酶浓度无关的一个常数。() 2.与肌红蛋白不同,血红蛋白由四个亚基组成,因此提高了它与氧的结合能力,从而增加了输氧的功能。() 3.维生素D和甲状腺激素的受体都在耙细胞核内。() 4.凝胶过虑法可用于测定蛋白质的分子量,分子量小的蛋白质先从柱上流出,分子量大的后流出。(）

Complete each of the following sentences with the most likely answer. (25 points) 1. The teacher explained the point a second time, but everyone understand A. not even then does B. even then not did C. not even then did d. not even then 2. All flights because of the storm, they decided to go to Beijing by train. A. having been canceled B had been canceled C having canceled D. were canceled

1. My sister spends studying so that she might later get a better job [A most of her times B her most times [C]her most time [D] most of her time 2. We got down to business as soon as we each othe [A ]had introduced to [B] had been introduced to

1、写出题图9-1所示的逻辑图的逻辑表达式题图9-1 2、画出实现下列逻辑函数的逻辑图 (1)Y=AB+ AB+ AB (2)Y=AB+ BC (3)Y=ABC +A+B (4)Y=(A+B+CDE+F

中科院 一九九七年攻读硕士学位研究生入学试题 《细胞生物学》B卷 一、名词解释(共25分) 1.扫描隧道微镜(ecanning tunneling sicroscope) 2.精(glycocalyx) 3.核层(3《auc1ea1aina) 4.变体介导内吞(receptr-mediated- endocytosis) .检查点(checkpoints) 6.信号对答(crotalking)

定理1(积分上限函数的导数) 如果函数f(x)在区间[a,b]上连续,则函数(x)=f(x)dx在[a,b]上可导,并且

一、化学交换现象 1 一个核在A,B两个不同状态下的交换 2 A,B两个不同状态: (1)处于不同分子, 如蛋白质上的NH,OH质子与水中质子交换 (2)同一个分子的不同构象 如顺式与反式异构体

一、逻辑函数 1.逻辑函数在数字电路中,逻辑变量表示输入条件,逻辑函数表示输出结果,输入变量A、B、C.通过逻辑运算得到输出结果F。它们之间的结果可表示为: F=f(A、B、C

一、选择 1、的作用是保持发动机在最适宜的温度范围内工作。 a.润滑系 b.冷却系 c燃料系 2、冷却水经水泵→水套→→散热器,又经水泵压入水套的循环,其水流路线长,散热强度大,称水冷却系的大循环。 a节温器 b风扇离合器 c风扇